JP5731186B2 - Method for detecting radar signals - Google Patents

Description

  The present invention relates to a method for detecting a radar signal, and more particularly, by analyzing a type pattern of radar pulses using a pulse width and a pulse repetition interval. The present invention relates to a method for sensing radar signals.

  As communication technology develops, various wireless communication methods are used to overcome the inconvenience of wired communication that always requires electric wires during communication. An IEEE (Institute of Electrical and Electronic Engineers) 802.11 series wireless LAN is one of them and has recently attracted much attention. IEEE802.11 is divided into a / b / g / (n) according to the frequency and method used. Among them, IEEE802.11a transmits / receives the 5 GHz frequency band using OFDM (Orthogonal Frequency Division Multiplexing). Is going.

  However, the 5 GHz frequency band is already used in weather, radio navigation, satellite radar, etc., including military radar, and is not only used in ITU-R (International Telecommunications Union-Radiocommunications), but also in European telecommunications. Standardization organizations (ETSI, European Telecommunications Standards Institute) and FCC (Federal Communications Commission) also recognize that wireless LANs using this band will have a serious impact on radar signals, and in order to solve this, the 'active frequency Selection (DFS, Dynamic Frequency Selection) and 'Transmission The influence on the radar signal was minimized by using a method called “transmission power control (TPC)”.

  'Active frequency selection (DFS)' is a method of detecting a radar signal, avoiding a channel where the radar is located, and restarting communication on a new channel, and is defined in IEEE802.11h. However, IEEE802.11h only defines a mechanism that detects the radar signal and then informs the elements that make up the network to move the channel, and how to actually detect the radar signal. The content is not included. Therefore, a specific method for detecting radar is required.

JP 2009-302874 A

  A technical problem to be solved by the present invention is to provide a radar signal detection method and apparatus for analyzing a received pulse to determine the presence or absence of a radar signal.

  According to the radar signal detection method of the present invention, a plurality of pulses are collected based on a predetermined reference time or a reference pulse collection number, and the plurality of pulses are grouped into similar pulses based on a pulse width. Classifying the entire group by short-pulse type or long-pulse type, determining the number of groups by type, and the presence or absence of radar signals based on the number of groups by type. Determining.

  The radar signal detection method may further include analyzing the pulses grouped by the grouping step by group.

  The radar signal detection method may further include a step of compensating for the lost pulse of the group pulse based on the analysis of the group pulse.

  The radar signal detection method may further include a step of additionally generating a new group based on the analysis of the group-specific pulse.

  The radar signal detection method may further include a step of grouping the plurality of pulses into similar pulses based on a pulse width and then averaging the pulse widths for each group.

  In addition, the step of analyzing for each group may include a step of analyzing based on the number of lost pulses for each group.

  Further, the step of analyzing each group may include a step of analyzing based on a pulse repetition interval of the radar-defined pulse.

  The radar signal detection method may further include filtering unnecessary pulses or unnecessary groups.

  The radar signal detection method may further include a step of changing the communication channel to another channel if it is determined that the radar signal is present.

  The radar signal detection module according to the present invention includes a pulse collection block for collecting and storing a plurality of pulses, and the pulse collection block receives the plurality of pulses based on a predetermined reference time or a reference pulse collection number. A control block for controlling to collect and an analysis block for analyzing the presence or absence of a radar signal based on the information of the plurality of pulses, wherein the information of the plurality of pulses includes a pulse width and a pulse repetition interval. Can be included.

  Further, the analysis block resembles the plurality of pulses based on a determination block for determining whether or not the collected plurality of pulses meet a first reference, and a determination result of the determination block. An operation block that performs group classification for each pulse and performs a first averaging operation, a second averaging operation, a lost pulse number operation, and a group number operation, and the plurality of pulses and the group based on a determination result of the determination block And a compensation block for compensating for a lost pulse of the plurality of pulses based on a determination result of the determination block.

  In addition, the first criterion may include a pulse width comparison criterion, a pulse repetition interval comparison criterion, a lost pulse number criterion, a group pulse number criterion, and a group number criterion.

  In addition, the filter filters the plurality of pulses based on a pulse width of a radar prescribed pulse according to a type of radar pulse, and filters the group based on the number of pulses for each group.

  The compensation block compensates for lost pulses based on the number of lost pulses in the group-by-group pulse repetition interval.

  The determination block additionally generates a group based on the number of lost pulses in the group-by-group pulse repetition interval.

  The plurality of pulses may include a short pulse and a long pulse.

  In addition, the group classification may internally classify short pulses into one group and long pulses into at least one group.

  The wireless transceiver according to the present invention may include the radar signal detection module and a processor that changes a channel according to a control signal generated by the radar signal detection module.

  In addition, a MIMO (Multi Input, Multi Output) radio transceiver can be implemented using the radio transceiver.

  The radar signal detection module and the wireless transceiver including the same according to the present invention can determine the presence or absence of a radar signal by analyzing the pulse width and pulse repetition interval of a received pulse.

  The radar signal detection module and the wireless transceiver including the same according to the present invention can move the channel to a channel without a radar signal when the radar signal is detected.

1 illustrates a wireless transceiver including a radar signal detection module according to an embodiment of the present invention. It is a figure which shows an example of the radio | wireless transmitter / receiver containing the radar signal detection module of FIG. 1A. It is a figure for showing the radar signal detection module of Drawing 1B. 5 is a flowchart illustrating a radar signal detection method according to an embodiment of the present invention. FIG. 4 is a flowchart illustrating an example of a pulse collection stage in FIG. 3. FIG. 4 is a flowchart illustrating an example of a pulse filtering stage of FIG. 3. FIG. 4 is a diagram for specifically explaining a pulse filtering step of FIG. 3. FIG. 4 is a flowchart illustrating an example of a pulse grouping stage in FIG. 3. FIG. FIG. 4 is a diagram for specifically explaining a pulse grouping stage of FIG. 3. 4 is a flowchart illustrating an example of a group analysis stage in FIG. 3. 4 is a flowchart illustrating an example of a compensation stage in FIG. 3. FIG. 4 is a diagram for specifically explaining a compensation stage of FIG. 3. 4 is a flowchart illustrating an example of a group filtering stage in FIG. 3. It is a flowchart which shows an example of the radar signal presence determination step of FIG.

  The specific structural or functional description of the embodiments of the invention disclosed herein is merely for the purpose of illustrating embodiments according to the present invention and is not intended to be exhaustive. The forms may be implemented in various forms, and the technical scope of the present invention should not be construed as being limited to only the embodiments described herein.

  Since embodiments according to the present invention can be variously modified and can have various forms, specific embodiments are illustrated in the drawings and described in detail herein. However, this is not intended to limit the embodiment according to the concept of the present invention to a specific disclosed form, but includes all modifications, equivalents or alternatives included in the spirit and technical scope of the present invention. Must be understood.

  Terms such as first and / or second are used to describe various components, but the components should not be limited by the terms. The terminology is used to distinguish one component from another component, for example, the first component is named the second component without departing from the scope of rights according to the inventive concept. Similarly, the second component may also be named the first component.

  When a component is referred to as being “coupled” or “connected” to another component, it may be directly coupled to or connected to the other component. However, it must be understood that other components may exist in the middle. On the other hand, when a component is referred to as being “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between. Other expressions describing the relationship between the components, such as “between” and “immediately between” or “adjacent to” and “adjacent to” are interpreted in the same way. There must be.

  The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular form includes the plural form unless the context clearly indicates otherwise. In this specification, terms such as “comprising” or “having” are intended to indicate that there is a feature, number, step, action, component, component, or combination thereof implemented. It should be understood that the existence or additional possibilities of one or more other features, numbers, steps, operations, components, components or combinations thereof are not excluded in advance.

  Unless otherwise defined, all terms used herein, including technical and scientific terms, are the same as commonly understood by those with ordinary skill in the art to which this invention belongs. It has meaning. Terms such as those defined in commonly used dictionaries should be construed as having a meaning consistent with the meaning possessed in the context of the related art, and are ideal unless explicitly defined herein. It is not interpreted as a formal or overly formal meaning.

  Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals in the drawings denote like members.

  FIG. 1A is a diagram illustrating a wireless transceiver 200 including a radar signal detection module 100 according to an embodiment of the present invention. The wireless transceiver 200 includes an antenna 300, a front end module 20, a processor 216, and a radar signal detection module 100.

  Referring to FIG. 1A, an RF signal received by an antenna 300 is input to a front end module 20, which amplifies or mixes the received RF signal with other signals or filters the received RF signal. After that, it is converted into a digital signal and output to the processor 216 and the radar signal detection module 100.

  The radar signal detection module 100 receives the digital signal and detects the presence or absence of the radar signal. If a radar signal is detected, the radar signal detection module 100 controls the processor 216 to change the communication channel to another channel that does not interfere with the detected radar signal.

  FIG. 1B is a diagram illustrating an example of a radio transceiver 200 including the radar signal detection module 100 of FIG. 1A. The radio transceiver 200 includes an antenna 300, a low noise amplifier 202, a first mixer 204, a second mixer 206, a first low pass filter 208, a second low pass filter 210, a first variable gain amplifier 212, and a second variable. A gain amplifier 214, a first analog-to-digital converter 217, a second analog-to-digital converter 218, a processor 216, a local oscillator 400, a phase conversion module 500, and a radar signal detection module 100 are included.

  Referring to FIG. 1B, an RF signal received by an antenna 300 is input to a low noise amplifier (LNA) 202, which amplifies the RF signal to a first mixer 204. And output to the second mixer 206.

  The first mixer 204 mixes the amplified RF signal and the local oscillation signal output from the local oscillator 400 to down-convert the RF signal (down-converted) I (In-phase). Down-convert to a low frequency signal (eg, one of a baseband frequency or an intermediate frequency) to generate a channel signal.

  The second mixer 206 mixes the amplified RF signal and a phase-shifted local oscillation signal through the phase conversion module 500 to generate a downward-converted Q (Quadrature) channel signal. To do. At this time, the phase conversion module 500 receives a local oscillation signal from the local oscillator 400 and outputs a local oscillation signal having a phase shifted by 90 °. The down-converted Q channel signal is also a low frequency signal (eg, one of a baseband frequency or an intermediate frequency).

  A first low-pass filter (LPF) 208 and a second low-pass filter (LPF) 210 are filtered by receiving the down-converted I and Q channel signals, respectively. I and Q channel signals are generated and output to the first variable gain amplifier 212 and the second variable gain amplifier 214.

  The first variable gain amplifier 212 and the second variable gain amplifier 214 receive the filtered I and Q channel signals, receive the gain control signal GCS from the processor 216, and vary the gain according to the gain control signal GCS. To do.

  The first analog-to-digital converter 217 and the second analog-to-digital converter 218 input the output signals of the first variable gain amplifier 212 and the second variable gain amplifier 214 to convert them into digital signals, and to the processor 216. Output.

  The radar signal detection module 100 is connected to the output terminals of the first analog-digital converter 217 and the second analog-digital converter 218, and detects the presence or absence of a radar signal. If a radar signal is detected, the radar signal detection module 100 outputs a control signal CS to the processor 216 so that the processor 216 changes the communication channel to another channel that does not interfere with the detected radar signal. sell.

  FIG. 2 is a diagram illustrating the radar signal detection module 100 of FIG. 1B. The radar signal detection module 100 includes a pulse acquisition block 110, a control block 120, and an analysis block 130.

  Referring to FIG. 2, the pulse acquisition block 110 collects and stores a plurality of pulses of signals output from the output terminals of the first analog-digital converter 217 and the second analog-digital converter 218. . At this time, a plurality of collected pulses may include a short pulse type and a long pulse type depending on the pulse width. The collected pulses may include information such as arrival time, pulse width, and pulse repetition interval.

  The control block 120 may cause the pulse acquisition block 110 to collect pulses according to a predetermined reference time (for example, a predetermined pulse acquisition time) or a reference pulse acquisition number. The reference pulse collection number may be an integer greater than or equal to 2 as the predetermined number of collection pulses. For example, when the reference time is set to 1000 μsec, the control block 120 controls the pulse acquisition block 110 to collect and store pulses during 100 μsec, and when the reference pulse collection number is set to 10, Block 120 controls the pulse acquisition block 110 to collect and store 10 pulses.

  As described above, if a plurality of pulses are collected, the analysis block 130 analyzes information on the plurality of pulses collected in the pulse collection block 110 to analyze the presence / absence of a radar signal. If determined, the control signal CS is output to the processor 216. At this time, the information of the plurality of pulses includes a pulse width (PW: Pulse Width) and a pulse repetition interval (PRI: Pulse Repeat Interval). As described above, according to an embodiment of the present invention, a pulse is not analyzed every time one pulse arrives (receives), but only after a predetermined reference time or a reference pulse collection number is satisfied. By analyzing a plurality of pulses collected in the pulse collection block 110, the load on the pulse detection device or system is reduced.

  The analysis block 130 includes a determination block 131, a calculation block 132, a filter 133 and a compensation block 134. The determination block 131 determines the presence / absence of radar signal detection together with the calculation block 132, the filter 133 and the compensation block 134.

  The determination block 131 determines whether the plurality of pulses meet a first criterion corresponding to a predetermined at least one criterion (eg, at least one criterion associated with the pulse width and the pulse repetition interval). When it is finally determined that the radar signal is detected, the control signal CS is output to the processor 216.

  At this time, the first reference is a pulse width comparison reference set based on a comparison between a pulse width of the plurality of pulses and a pulse width of a radar regulation pulse according to a radar pulse type, a pulse repetition interval of the plurality of pulses, Pulse repetition interval comparison criteria set based on comparison of radar specified pulses with pulse repetition intervals depending on the type of radar pulse, loss pulse number criteria set based on the number of lost pulses of the plurality of pulses, group-specific pulses A group-specific pulse number reference set based on the number and a group number reference set based on the group number.

  The arithmetic block 132 can classify the plurality of pulses into similar pulses based on the determination result of the determination block 131. For example, it is possible to determine the pulse widths of the plurality of received pulses and classify the plurality of pulses into similar groups. At this time, the short pulse group is internally classified into only one group, and the long pulse group is internally divided into one or more other groups.

  The operation block 132 performs a first averaging operation for averaging classification criteria (for example, pulse width) in the group, and averages at least one piece of information (for example, pulse repetition interval) of the pulses in the group. 2. Averaging calculation, calculation of the number of lost pulses related to the number of lost pulses in the pulse repetition interval of the plurality of pulses, and calculation of the number of groups related to the number of groups by pulse type

  The decision block 131 may additionally generate a group based on the number of lost pulses. For example, if the number of lost pulses is 5 and the reference value is 4, the number of lost pulses is 1 larger than the reference value. Therefore, after the pulse repetition interval, the pulses are regarded as another group and an additional group is generated. To do.

  The filter 133 filters the plurality of pulses or filters the classified group based on the determination result of the determination block 131. For example, a part of the plurality of pulses is filtered by a determination based on a pulse width of a radar specified pulse (Regulation Pulse, for example, FCC or ETSI specified pulse) according to a type of the radar pulse, and based on the number of pulses per group of the group The group is filtered according to the judgment.

  The compensation block 134 can compensate for the loss pulse of the plurality of pulses based on the determination result of the determination block 131. For example, pulse compensation can be performed by determining that a pulse loss has occurred by determining that a lost pulse exists in the pulse repetition interval of the group and determining that the number of lost pulses is equal to or less than a reference value. Specifically, when the number of lost pulses is 3 and the reference value is 4, the compensation block 134 can perform pulse compensation because the number of lost pulses is equal to or less than the reference value.

  FIG. 3 is a flowchart illustrating a radar signal detection method according to an embodiment of the present invention. The radar signal detection method of FIG. 3 is performed by the radar signal detection module 100 of FIG.

  Referring to FIG. 3, the radar signal detection module 100 collects a plurality of pulses (step S100). Next, the collected pulses are filtered based on the range of the pulse width of the radar-defined pulse for all types of radar pulses (step S200).

  Next, the filtered pulses are classified into groups according to the similarity of the pulse width (step S300). At this time, the radar signal detection module 100 averages and stores the group-specific pulse widths.

  Next, the radar signal detection module 100 analyzes the group-specific pulse (step S400). At this time, a part of pulses included in the group is filtered or averaged and stored according to a range of pulse repetition intervals of the radar-defined pulse type corresponding to the pulse width of each group.

  Next, the number of lost pulses in the pulse repetition interval is analyzed for each group to compensate for the lost pulses (step S500).

  Next, the group pulse width and the pulse repetition interval are finally averaged, and a part of the group is filtered based on the number of group pulses (step S600).

  Next, the total group is classified by type (for example, short pulse and long pulse), and the presence / absence of radar signal detection is determined based on the number of groups by type (step S700).

  FIG. 4 is a flowchart showing an example of the pulse collection stage (step S100) of FIG. Referring to FIG. 4, the pulse collection block 110 collects and stores a plurality of pulses (step S110).

  Next, the control block 120 controls the pulse collection block 110 to collect the plurality of pulses based on a predetermined reference time or reference pulse collection number (step S120). Specifically, the control block 120 controls the pulse acquisition block 110 to collect a plurality of pulses only during a reference time, or if the reference pulse number is acquired, the pulse acquisition block 110 Control no more pulses.

  FIG. 5A is a flowchart illustrating an example of the pulse filtering step (step S200) of FIG. Referring to FIG. 5A, the determination block 131 determines whether or not the collected pulses correspond to the reference range of the radar prescribed pulse for all types of radar pulses (step S210), and the reference range of the radar prescribed pulse is determined. The pulses that are off are removed through the filter 133 (step S220). Decision block 131 determines whether step S210 has been performed on every collected pulse (step S230).

  FIG. 5B is a diagram for specifically explaining the pulse filtering step (step S200) of FIG. FIG. 5B shows an example of pulses collected by the pulse acquisition block 110. At this time, the pulses P1 and P2 correspond to pulse widths of 0.5 μsec and 150 μsec, respectively, and are out of the range (for example, 10 to 100 μsec) of the radar-defined pulse with respect to the radar pulse type. Therefore, the pulses P1 and P2 are removed by the filter 133.

  FIG. 6A is a flowchart showing an example of the pulse grouping step (step S300) of FIG. Referring to FIG. 6A, the determination block 131 determines whether or not the pulse width is similar to the filtered pulse from S200, and the calculation block 132 determines whether the pulse width is similar to the pulse width. The pulses are grouped (step S310), and the pulse width values are averaged for each group (step S320).

  FIG. 6B is a diagram for specifically explaining the pulse grouping step (step S300) of FIG. FIG. 6B shows the collected pulses grouped based on pulse width similarity. Group G1 is a group of pulses whose pulse width is close to 10 μsec, and group G2 is a group of pulses whose pulse width is close to 20 μsec. The groups G3 to G7 are obtained by grouping pulses having pulse widths close to 50 μsec, 90 μsec, 70 μsec, 100 μsec, and 60 μsec, respectively. The groups G3 to G7 correspond to other groups, respectively.

  FIG. 7 is a flowchart showing an example of the group analysis stage (step S400) of FIG. Referring to FIG. 7, the determination block 131 collects a range of pulse repetition intervals of radar-defined pulses according to an averaged pulse width (step S410), and the pulse repetition interval of the grouped pulses is determined as the radar-defined pulse. It is determined whether or not the first range (for example, the minimum value) of the pulse repetition interval is satisfied (step S420). If not, the pulse is removed from the group through the filter 133 (step S420). S430). If it falls within the first range, the decision block 131 may fall within a second range (eg, a maximum value) of the pulse repetition interval of the radar-defined pulse and / or similarity between the pulse repetition intervals within the group. It is determined whether or not there is (step S440). If this is the case, the operation block 132 averages the intra-group pulse repetition interval (step S450).

  Next, the determination block 131 determines whether step S420 has been performed for every pulse in the group (step S455). As a result of the determination in step S455, if all the pulses in the group have not been examined (that is, if the determination result in step S455 is 'No'), the process returns to step S420.

  If the determination result in step S455 is considered for every pulse in the group (that is, if the determination result in step S455 is 'Yes'), the determination block 131 determines whether the averaged pulse repetition interval is satisfied. Is not valid (step S460), and if not valid, the filter 133 removes the group (step S470).

  Next, the determination block 131 determines whether or not the above-described S410 to S470 have been considered in every group (step S480).

  FIG. 8A is a flowchart showing an example of the compensation stage (step S500) of FIG. Referring to FIG. 8A, the calculation block 132 calculates the number of lost pulses based on the averaged pulse repetition interval (step S510). The decision block 131 determines whether the number of lost pulses is 0 (step S520). If not, it is determined whether the number of lost pulses exceeds a reference value (or a maximum critical value). (Step S530). If the reference value is exceeded, the determination block 131 additionally generates a new group having the pulse as a start pulse (step S550). If the reference value is not exceeded, the compensation block 134 considers that a pulse loss has occurred and compensates the pulse (step S540).

  Next, the determination block 131 determines whether the S510 to S550 have been considered in every pulse and every group (steps S560 and S570).

  FIG. 8B is a diagram for specifically explaining the compensation stage (step S500) of FIG. FIG. 8B shows compensating pulses based on the number of lost pulses. If the reference value is 2, if the number of lost pulses is 2, it is considered that the pulse has been lost and the pulse is compensated. If the number of lost pulses is 3, the reference value 2 is exceeded, so a new group is additionally generated.

  FIG. 9 is a flowchart illustrating an example of the group filtering step (step S600) of FIG. Referring to FIG. 9, the operation block 132 averages the final pulse width and the pulse repetition interval obtained in S500, and obtains the number of pulses for each group (step S610).

  Next, the determination block 131 determines whether or not the number of pulses by group is an abnormal number (step S620), and groups having an abnormal number of pulses by group are removed through the filter 133 (step S630). Next, the determination block 131 determines whether or not the above-described S610 to S630 have been considered in every group (step S640).

  FIG. 10 is a flowchart showing an example of the radar signal presence / absence determination step (step S700) of FIG. Referring to FIG. 10, the calculation block 132 classifies the total group by type (for example, short pulse and long pulse) and calculates the number of groups by type (step S710). The determination block 131 determines whether or not the number of groups by type falls within the reference range (step S720), and if it falls within the reference range, determines that a radar signal has been detected (step S730).

  The present invention can also be embodied as computer-readable code on a computer-readable recording medium. Computer-readable recording media include all types of recording devices that can store data that can be read by a computer system.

Examples of the computer-readable recording medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk (registered trademark) , optical data storage device, etc., and for performing the object information estimation method according to the present invention. The program code can be transmitted in the form of a carrier wave (for example, transmission through the Internet).

  The computer-readable recording medium can be executed by being distributed in a computer system connected via a network and storing a computer-readable code in a distributed manner. A functional program, code, and code segment for implementing the present invention can be easily inferred by a programmer in the technical field to which the present invention belongs.

  Although the present invention has been described with reference to an embodiment shown in the drawings, this is only an example, and those skilled in the art can make various modifications and other equivalent embodiments. You will understand that. Therefore, the true technical protection scope of the present invention should be determined by the technical idea of the claims.

  The present invention is applicable to technical fields related to methods for detecting radar signals.

20 front end module,
100 radar signal detection module,
200 wireless transceiver,
202 low noise amplifier,
204 first mixer,
206 second mixer,
208 first low-pass filter,
210 second low-pass filter,
212 first variable gain amplifier;
214 second variable gain amplifier;
216 processor,
217 first analog-digital converter;
218 second analog-to-digital converter;
300 antennas,
400 local transmitter,
500 Phase conversion module.

Claims (7)

Collecting a plurality of pulses based on a predetermined reference time or a reference pulse collection number;
Filtering the collected plurality of pulses with a pulse filtering criterion;
Grouping multiple filtered pulses by similar pulses based on pulse width; and
Analyzing the grouped pulses by group;
Compensating for lost pulses of the grouped pulses based on the group-specific analysis, or generating a new group additionally,
Classifying the total group into a short-pulse type or a long-pulse type and determining the number of groups by type;
Determining the presence or absence of a radar signal based on whether the number of groups by type is in a reference range ; and
A radar signal detection method characterized by comprising: The method for detecting the radar signal is as follows:
The radar signal detection method according to claim 1, further comprising: averaging the pulse widths for each group after the plurality of pulses are grouped for each similar pulse based on the pulse width . The method for detecting the radar signal is as follows:
Based on the plurality of pulses to the pulse width after grouped by similar pulse, the radar signal according to claim 1 or 2, further comprising a step of analyzing, based on the group-specific losses pulse number detecting Method. The method for detecting the radar signal is as follows:
Based on the plurality of pulses to the pulse width after grouped by similar pulse, according to any one of claims 1 to 3, characterized by further comprising the step of analyzing based on the pulse repetition interval of the radar specified pulse Radar signal detection method. The method for detecting the radar signal is as follows:
Detection method of radar signal according to any one of claims 1 to 4, characterized by further comprising the step of filtering by a group filtering criteria to each group grouped by the similarity pulse. Collecting a plurality of pulses based on a predetermined reference time or a reference pulse collection number;
Filtering each of the plurality of pulses with a pulse filtering criterion;
Grouping the filtered pulses by similar pulses based on pulse width;
Analyzing the grouped pulses by group;
Compensating for lost pulses of the grouped pulses based on the analysis by group, or generating a new group additionally,
Filtering each group according to group filtering criteria;
Classifying each group that has undergone group filtering into short pulse type or long pulse type, and obtaining the number of groups by type,
Determining the presence or absence of a radar signal based on whether the number of groups by type is in a reference range; and
A radar signal detection method characterized by comprising : A computer-readable recording medium on which a computer program for executing the method according to claim 1 is recorded.